Home / 459,998,932.80-689,658,069.60-217,378,401.60

Finding the Fourth Proportional to 459,998,932.80, 689,658,069.60 and 217,378,401.60

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Solution

The fourth proportional to 459,998,932.80, 689,658,069.60 and 217,378,401.60 is: 325,906,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,998,932.80 : 689,658,069.60 = 217,378,401.60 : x
  2. Step 2: Convert to fraction form
    459,998,932.80/689,658,069.60 = 217,378,401.60/x
  3. Step 3: Cross multiply
    459,998,932.80x = 689,658,069.60 × 217,378,401.60
  4. Step 4: Simplify right side
    459,998,932.80x = 149,916,768,820,189,568
  5. Step 5: Solve for x
    x = 149,916,768,820,189,568/459,998,932.80
  6. Step 6: Final answer
    x = 325,906,775.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.